Improvement in cae-seat looks



, @niiet tang @anni @Him MA`RTIN P'. FORI), 0F COLUMBUS, OfIIIIO.

Letters-Patent No. 66,479; dated July 9, 1867.

IMPROVEMENT IN GAR-SEAT LOCKS.

dige Srlgchule referat tt ia tigen stas @that mit mating tart nt tigt stmt.

TO ALL WI-IOM IT MAY CONCERN: l

Be it known that I, MARTINI). FORD, of Columbus, in the` county of Franklin, and Stute of Ohio, have invented a new and useful Improvement in SeatfLocks for Railway Cars; and I do declare the following to heya. full and enact description ot the same, reference being had to the accompanying uclrawings,- in which* Figure 1 is afront elevation ofthe lock attached to a. seat-arm. l

Figure 2 is a view of the reverse side of the lock.

Figure 8 is a side elevation of the working parts ofthe lock, the dotted lines in'red showing the position oi' `the frame.

Similar letters of reference on the diilerent figures represent corresponding parts.

The nature of this invention consists in the use of a. rotating cam to operate the bolt and the spring, as herein arranged, the whole to bc recessed into the catch or supporting-arm, so arranged that the various functions of a seat-lock are all comprised within the dimensions 'ofv the common hook or support.

To cnable'otliers skilled in the arts to make and use my invention, I will proceed to describe the nature ot` its construction and manner of operation with the aid of the drawings. l

The frame B is cast from brass or other material, und does not differ materially from the common form oi' such hooks or supports, when used without a lock. This hook B is secured to a seat-arm, S, in the usual manner, by wood-screws, as shown. Through this frame there is a. short bolt, C, inserted, working in a. sleeve and raised boss to guide and support it. This bolt, when the seat is locked, projects through the frame, catching into the linkf at d inn suitable recess made to receive it, holding the link rmly in the hook, and preventing passengers and others from reversing the seats without the use of a. key. The'hole or recess CZ is drilled on the back side of the link, and no access can be obtained to' shove the bolt back. The bolt C is operated by means-of a. rotating cru'n, A, and spring o, operated by means of the key n. The cam vA tits intoa suitable recess in the frame, without any fastening other than the spring-lever o. This lever orspring is made from steel wire, one end passing into bolt C, as a lever for moving the bolt. The other end is lriveted down iirmly around the boss at zr. In moving the bolt C, this spring bends, as shown by black dotted lines, iig. 3, and acts as n. spring to throw the'bolt when the cam A is rotated to lock the seat. The cam A and spring-piece o are recessed in the plate, so as to present the plain surface on the back, by which means the whole lock presents a light and symmetrical appearance, and involves but little labor in attaching itl to the seat-arm.

There being no permanent attachment of any of the Workingparts to the main plate, except the spring o,

`makes the'` lock oi' simple and cheap construction, and, from its simplicity, not liable to disarrangement.

The key n is inserted in the key-hole m', the Wards r r passing through the horizontal slots in the frame, and into corresponding notches in the rotating cam, shown at s, iig. 3. By turningr the key one-fourth around, the cam is turned the same distance. The inclined rim (Hg. 3) coming in contact with the lever o,'th1ows the boltl C back, releasing the seat-link jil'allowing the seat to b'e reversed. In turning the key as described, the wards r r come inline with the vertical slot at m, and allow it to be removed from the lock. The face of this cam is so constructed that it will keep its position when the bolt is thrown back; it has also a stop striking against the lever o, regulating the throw. In locking the seat no key is used. The linkf, striking on the bevel, shown on the end of bolt C, iig. 3, causes it to recede until the link cornes into position, when it is thrown out by means of the springe locking the seat, as described.

These locks are constructed right and left, to be used on either side, two being used on each seat. The

mechanism being the same, except at the lock-plate, is curved in opposite directions, as will be readily understood.

Having thus described the naturel of my invention, I do not claim a lock for locking railway seats; neither do I claim constructing a lock within and forming aI part oi' the hook or link support; but what I regard as new, and desire to secure by'Letters Patent, is

4 Recessing the cam A and spring-lever o into the back of the plate, so as to present a iiush surface, as herein described,

M. P.. FORD.

Witnesses:

ELiJnH R. OsGooD, JNO. RICHARDS, 

